aboutsummaryrefslogtreecommitdiffstats
path: root/channels/h323/ast_h323.cxx
blob: 3c1a56c4b55af092f042aebf7f1b302ff28a2baa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
/*
 * ast_h323.cpp
 *
 * OpenH323 Channel Driver for ASTERISK PBX.
 *			By  Jeremy McNamara
 *			For The NuFone Network
 *
 * chan_h323 has been derived from code created by
 *               Michael Manousos and Mark Spencer
 *
 * This file is part of the chan_h323 driver for Asterisk
 *
 * chan_h323 is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * chan_h323 is distributed WITHOUT ANY WARRANTY; without even
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * Version Info: $Id$
 */
#include <arpa/inet.h>

#include <list>
#include <string>
#include <algorithm>

#include <ptlib.h>
#include <h323.h>
#include <h323pdu.h>
#include <h323neg.h>
#include <mediafmt.h>
#include <lid.h>
#ifdef H323_H450
#include "h4501.h"
#include "h4504.h"
#include "h45011.h"
#include "h450pdu.h"
#endif

#ifdef __cplusplus
extern "C" {
#endif
#include "asterisk/logger.h"
#include "asterisk/channel.h"
#include "asterisk/astobj.h"
#ifdef __cplusplus
}
#endif

#include "chan_h323.h"
#include "ast_h323.h"
#include "cisco-h225.h"
#include "caps_h323.h"

/* PWlib Required Components  */
#define MAJOR_VERSION 1
#define MINOR_VERSION 0
#define BUILD_TYPE    ReleaseCode
#define BUILD_NUMBER  0

/** Counter for the number of connections */
static int channelsOpen;

/**
 * We assume that only one endPoint should exist.
 * The application cannot run the h323_end_point_create() more than once
 * FIXME: Singleton this, for safety
 */
static MyH323EndPoint *endPoint = NULL;

/** PWLib entry point */
static MyProcess *localProcess = NULL;

static int _timerChangePipe[2];

static unsigned traceOptions = PTrace::Timestamp | PTrace::Thread | PTrace::FileAndLine;

class PAsteriskLog : public PObject, public iostream {
	PCLASSINFO(PAsteriskLog, PObject);

	public:
	PAsteriskLog() : iostream(cout.rdbuf()) { init(&buffer); }
	~PAsteriskLog() { flush(); }

	private:
	PAsteriskLog(const PAsteriskLog &) : iostream(cout.rdbuf()) { }
	PAsteriskLog & operator=(const PAsteriskLog &) { return *this; }

	class Buffer : public streambuf {
		public:
		virtual int overflow(int=EOF);
		virtual int underflow();
		virtual int sync();
		PString string;
	} buffer;
	friend class Buffer;
};

static PAsteriskLog *logstream = NULL;

int PAsteriskLog::Buffer::overflow(int c)
{
	if (pptr() >= epptr()) {
		int ppos = pptr() - pbase();
		char *newptr = string.GetPointer(string.GetSize() + 2000);
		setp(newptr, newptr + string.GetSize() - 1);
		pbump(ppos);
	}
	if (c != EOF) {
		*pptr() = (char)c;
		pbump(1);
	}
	return 0;
}

int PAsteriskLog::Buffer::underflow()
{
	return EOF;
}

int PAsteriskLog::Buffer::sync()
{
	char *str = strdup(string);
	char *s, *s1;
	char c;

	/* Pass each line with different ast_verbose() call */
	for (s = str; s && *s; s = s1) {
		s1 = strchr(s, '\n');
		if (!s1)
			s1 = s + strlen(s);
		else
			s1++;
		c = *s1;
		*s1 = '\0';
		ast_verbose("%s", s);
		*s1 = c;
	}
	free(str);

	string = PString();
	char *base = string.GetPointer(2000);
	setp(base, base + string.GetSize() - 1);
	return 0;
}

static ostream &my_endl(ostream &os)
{
	if (logstream) {
		PTrace::SetOptions(traceOptions);
		return PTrace::End(os);
	}
	return endl(os);
}

#define cout \
	(logstream ? (PTrace::ClearOptions((unsigned)-1), PTrace::Begin(0, __FILE__, __LINE__)) : std::cout)
#define endl my_endl

/* Special class designed to call cleanup code on module destruction */
class MyH323_Shutdown {
	public:
	MyH323_Shutdown() { };
	~MyH323_Shutdown()
	{
		h323_end_process();
	};
};

MyProcess::MyProcess(): PProcess("The NuFone Network's",
			"H.323 Channel Driver for Asterisk",
			MAJOR_VERSION, MINOR_VERSION, BUILD_TYPE, BUILD_NUMBER)
{
	/* Call shutdown when module being unload or asterisk has been stopped */
	static MyH323_Shutdown x;

	/* Fix missed one in PWLib */
	PX_firstTimeStart = FALSE;
	Resume();
}

MyProcess::~MyProcess()
{
	_timerChangePipe[0] = timerChangePipe[0];
	_timerChangePipe[1] = timerChangePipe[1];
}

void MyProcess::Main()
{
	PTrace::Initialise(PTrace::GetLevel(), NULL, traceOptions);
	PTrace::SetStream(logstream);

	cout << "  == Creating H.323 Endpoint" << endl;
	if (endPoint) {
		cout << "  == ENDPOINT ALREADY CREATED" << endl;
		return;
	}
	endPoint = new MyH323EndPoint();
	/* Due to a bug in the H.323 recomendation/stack we should request a sane
	   amount of bandwidth from the GK - this function is ignored if not using a GK
	   We are requesting 128 (64k in each direction), which is the worst case codec. */
	endPoint->SetInitialBandwidth(1280);
}

void PAssertFunc(const char *msg)
{
	ast_log(LOG_ERROR, "%s\n", msg);
	/* XXX: Probably we need to crash here */
}


/** MyH323EndPoint
  */
MyH323EndPoint::MyH323EndPoint()
		: H323EndPoint()
{
	/* Capabilities will be negotiated on per-connection basis */
	capabilities.RemoveAll();

	/* Reset call setup timeout to some more reasonable value than 1 minute */
	signallingChannelCallTimeout = PTimeInterval(0, 0, 10);	/* 10 minutes */
}

/** The fullAddress parameter is used directly in the MakeCall method so
  * the General form for the fullAddress argument is :
  * [alias@][transport$]host[:port]
  * default values:	alias = the same value as host.
  *					transport = ip.
  *					port = 1720.
  */
int MyH323EndPoint::MyMakeCall(const PString & dest, PString & token, void *_callReference, void *_opts)
{
	PString fullAddress;
	MyH323Connection * connection;
	H323Transport *transport = NULL;
	unsigned int *callReference = (unsigned int *)_callReference;
	call_options_t *opts = (call_options_t *)_opts;

	/* Determine whether we are using a gatekeeper or not. */
	if (GetGatekeeper()) {
		fullAddress = dest;
		if (h323debug) {
			cout << " -- Making call to " << fullAddress << " using gatekeeper." << endl;
		}
	} else {
		fullAddress = dest;
		if (h323debug) {
			cout << " -- Making call to " << fullAddress << " without gatekeeper." << endl;
		}
		/* Use bindaddr for outgoing calls too if we don't use gatekeeper */
		if (listeners.GetSize() > 0) {
			H323TransportAddress taddr = listeners[0].GetTransportAddress();
			PIPSocket::Address addr;
			WORD port;
			if (taddr.GetIpAndPort(addr, port)) {
				/* Create own transport for specific addresses only */
				if (addr) {
					if (h323debug)
						cout << "Using " << addr << " for outbound call" << endl;
					transport = new MyH323TransportTCP(*this, addr);
					if (!transport)
						cout << "Unable to create transport for outgoing call" << endl;
				}
			} else
				cout << "Unable to get address and port" << endl;
		}
	}
	if (!(connection = (MyH323Connection *)H323EndPoint::MakeCallLocked(fullAddress, token, opts, transport))) {
		if (h323debug) {
			cout << "Error making call to \"" << fullAddress << '"' << endl;
		}
		return 1;
	}
	*callReference = connection->GetCallReference();

	if (h323debug) {
		cout << "\t-- " << GetLocalUserName() << " is calling host " << fullAddress << endl;
		cout << "\t-- Call token is " << (const char *)token << endl;
		cout << "\t-- Call reference is " << *callReference << endl;
		cout << "\t-- DTMF Payload is " << connection->dtmfCodec << endl;
	}
	connection->Unlock();
	return 0;
}

void MyH323EndPoint::SetEndpointTypeInfo( H225_EndpointType & info ) const
{
	H323EndPoint::SetEndpointTypeInfo(info);

	if (terminalType == e_GatewayOnly){
		info.RemoveOptionalField(H225_EndpointType::e_terminal);
		info.IncludeOptionalField(H225_EndpointType::e_gateway);
	}

	info.m_gateway.IncludeOptionalField(H225_GatewayInfo::e_protocol);
	info.m_gateway.m_protocol.SetSize(1);
	H225_SupportedProtocols &protocol=info.m_gateway.m_protocol[0];
	protocol.SetTag(H225_SupportedProtocols::e_voice);
	PINDEX as=SupportedPrefixes.GetSize();
	((H225_VoiceCaps &)protocol).m_supportedPrefixes.SetSize(as);
	for (PINDEX p=0; p<as; p++) {
		H323SetAliasAddress(SupportedPrefixes[p], ((H225_VoiceCaps &)protocol).m_supportedPrefixes[p].m_prefix, H225_AliasAddress::e_dialedDigits);
	}
}

void MyH323EndPoint::SetGateway(void)
{
	terminalType = e_GatewayOnly;
}

BOOL MyH323EndPoint::ClearCall(const PString & token, H323Connection::CallEndReason reason)
{
	if (h323debug) {
#ifdef PTRACING
		cout << "\t-- ClearCall: Request to clear call with token " << token << ", cause " << reason << endl;
#else
		cout << "\t-- ClearCall: Request to clear call with token " << token << ", cause [" << (int)reason << "]" << endl;
#endif
	}
	return H323EndPoint::ClearCall(token, reason);
}

BOOL MyH323EndPoint::ClearCall(const PString & token)
{
	if (h323debug) {
		cout << "\t-- ClearCall: Request to clear call with token " << token << endl;
	}
	return H323EndPoint::ClearCall(token, H323Connection::EndedByLocalUser);
}

void MyH323EndPoint::SendUserTone(const PString &token, char tone)
{
	H323Connection *connection = NULL;

	connection = FindConnectionWithLock(token);
	if (connection != NULL) {
		connection->SendUserInputTone(tone, 500);
		connection->Unlock();
	}
}

void MyH323EndPoint::OnClosedLogicalChannel(H323Connection & connection, const H323Channel & channel)
{
	channelsOpen--;
	if (h323debug) {
		cout << "\t\tchannelsOpen = " << channelsOpen << endl;
	}
	H323EndPoint::OnClosedLogicalChannel(connection, channel);
}

BOOL MyH323EndPoint::OnConnectionForwarded(H323Connection & connection,
		const PString & forwardParty,
		const H323SignalPDU & pdu)
{
	if (h323debug) {
		cout << "\t-- Call Forwarded to " << forwardParty << endl;
	}
	return FALSE;
}

BOOL MyH323EndPoint::ForwardConnection(H323Connection & connection,
		const PString & forwardParty,
		const H323SignalPDU & pdu)
{
	if (h323debug) {
		cout << "\t-- Forwarding call to " << forwardParty << endl;
	}
	return H323EndPoint::ForwardConnection(connection, forwardParty, pdu);
}

void MyH323EndPoint::OnConnectionEstablished(H323Connection & connection, const PString & estCallToken)
{
	if (h323debug) {
		cout << "\t=-= In OnConnectionEstablished for call " << connection.GetCallReference() << endl;
		cout << "\t\t-- Connection Established with \"" << connection.GetRemotePartyName() << "\"" << endl;
	}
	on_connection_established(connection.GetCallReference(), (const char *)connection.GetCallToken());
}

/** OnConnectionCleared callback function is called upon the dropping of an established
  * H323 connection.
  */
void MyH323EndPoint::OnConnectionCleared(H323Connection & connection, const PString & clearedCallToken)
{
	PString remoteName = connection.GetRemotePartyName();

	switch (connection.GetCallEndReason()) {
		case H323Connection::EndedByCallForwarded:
			if (h323debug) {
				cout << "-- " << remoteName << " has forwarded the call" << endl;
			}
			break;
		case H323Connection::EndedByRemoteUser:
			if (h323debug) {
				cout << "-- " << remoteName << " has cleared the call" << endl;
			}
			break;
		case H323Connection::EndedByCallerAbort:
			if (h323debug) {
				cout << "-- " << remoteName << " has stopped calling" << endl;
			}
			break;
		case H323Connection::EndedByRefusal:
			if (h323debug) {
				cout << "-- " << remoteName << " did not accept your call" << endl;
			}
			break;
		case H323Connection::EndedByRemoteBusy:
			if (h323debug) {
				cout << "-- " << remoteName << " was busy" << endl;
			}
			break;
		case H323Connection::EndedByRemoteCongestion:
			if (h323debug) {
				cout << "-- Congested link to " << remoteName << endl;
			}
			break;
		case H323Connection::EndedByNoAnswer:
			if (h323debug) {
				cout << "-- " << remoteName << " did not answer your call" << endl;
			}
			break;
		case H323Connection::EndedByTransportFail:
			if (h323debug) {
				cout << "-- Call with " << remoteName << " ended abnormally" << endl;
			}
			break;
		case H323Connection::EndedByCapabilityExchange:
			if (h323debug) {
				cout << "-- Could not find common codec with " << remoteName << endl;
			}
			break;
		case H323Connection::EndedByNoAccept:
			if (h323debug) {
				cout << "-- Did not accept incoming call from " << remoteName << endl;
			}
			break;
		case H323Connection::EndedByAnswerDenied:
			if (h323debug) {
				cout << "-- Refused incoming call from " << remoteName << endl;
			}
			break;
		case H323Connection::EndedByNoUser:
			if (h323debug) {
				cout << "-- Remote endpoint could not find user: " << remoteName << endl;
			}
			break;
		case H323Connection::EndedByNoBandwidth:
			if (h323debug) {
				cout << "-- Call to " << remoteName << " aborted, insufficient bandwidth." << endl;
			}
			break;
		case H323Connection::EndedByUnreachable:
			if (h323debug) {
				cout << "-- " << remoteName << " could not be reached." << endl;
			}
			break;
		case H323Connection::EndedByHostOffline:
			if (h323debug) {
				cout << "-- " << remoteName << " is not online." << endl;
			}
			break;
		case H323Connection::EndedByNoEndPoint:
			if (h323debug) {
				cout << "-- No phone running for " << remoteName << endl;
			}
			break;
		case H323Connection::EndedByConnectFail:
			if (h323debug) {
				cout << "-- Transport error calling " << remoteName << endl;
			}
			break;
		default:
			if (h323debug) {
#ifdef PTRACING
				cout << " -- Call with " << remoteName << " completed (" << connection.GetCallEndReason() << ")" << endl;
#else
				cout << " -- Call with " << remoteName << " completed ([" << (int)connection.GetCallEndReason() << "])" << endl;
#endif
			}
	}

	if (connection.IsEstablished()) {
		if (h323debug) {
			cout << "\t-- Call duration " << setprecision(0) << setw(5) << (PTime() - connection.GetConnectionStartTime()) << endl;
		}
	}
	/* Invoke the PBX application registered callback */
	on_connection_cleared(connection.GetCallReference(), clearedCallToken);
	return;
}

H323Connection * MyH323EndPoint::CreateConnection(unsigned callReference, void *userData, H323Transport *transport, H323SignalPDU *setupPDU)
{
	unsigned options = 0;
	call_options_t *opts = (call_options_t *)userData;
	MyH323Connection *conn;

	if (opts && opts->fastStart) {
		options |= H323Connection::FastStartOptionEnable;
	} else {
		options |= H323Connection::FastStartOptionDisable;
	}
	if (opts && opts->h245Tunneling) {
		options |= H323Connection::H245TunnelingOptionEnable;
	} else {
		options |= H323Connection::H245TunnelingOptionDisable;
	}
/* Disable until I can figure out the proper way to deal with this */
#if 0
	if (opts->silenceSuppression) {
		options |= H323Connection::SilenceSuppresionOptionEnable;
	} else {
		options |= H323Connection::SilenceSUppressionOptionDisable;
	}
#endif
	conn = new MyH323Connection(*this, callReference, options);
	if (conn) {
		if (opts)
			conn->SetCallOptions(opts, (setupPDU ? TRUE : FALSE));
	}
	return conn;
}

/* MyH323Connection Implementation */
MyH323Connection::MyH323Connection(MyH323EndPoint & ep, unsigned callReference,
							unsigned options)
	: H323Connection(ep, callReference, options)
{
#ifdef H323_H450
	/* Dispatcher will free out all registered handlers */
	if (h450dispatcher)
		delete h450dispatcher;
	h450dispatcher = new H450xDispatcher(*this);
	h4502handler = new H4502Handler(*this, *h450dispatcher);
	h4504handler = new MyH4504Handler(*this, *h450dispatcher);
	h4506handler = new H4506Handler(*this, *h450dispatcher);
	h45011handler = new H45011Handler(*this, *h450dispatcher);
#endif
	cause = -1;
	sessionId = 0;
	bridging = FALSE;
	holdHandling = progressSetup = progressAlert = 0;
	dtmfMode = 0;
	dtmfCodec[0] = dtmfCodec[1] = (RTP_DataFrame::PayloadTypes)0;
	redirect_reason = -1;
#ifdef TUNNELLING
	tunnelOptions = remoteTunnelOptions = 0;
#endif
	if (h323debug) {
		cout << "	== New H.323 Connection created." << endl;
	}
	return;
}

MyH323Connection::~MyH323Connection()
{
	if (h323debug) {
		cout << "	== H.323 Connection deleted." << endl;
	}
	return;
}

BOOL MyH323Connection::OnReceivedProgress(const H323SignalPDU &pdu)
{
	BOOL isInband;
	unsigned pi;

	if (!H323Connection::OnReceivedProgress(pdu)) {
		return FALSE;
	}

	if (!pdu.GetQ931().GetProgressIndicator(pi))
		pi = 0;
	if (h323debug) {
		cout << "\t- Progress Indicator: " << pi << endl;
	}

	switch(pi) {
	case Q931::ProgressNotEndToEndISDN:
	case Q931::ProgressInbandInformationAvailable:
		isInband = TRUE;
		break;
	default:
		isInband = FALSE;
	}
	on_progress(GetCallReference(), (const char *)GetCallToken(), isInband);

	return connectionState != ShuttingDownConnection;
}

BOOL MyH323Connection::MySendProgress()
{
	/* The code taken from H323Connection::AnsweringCall() but ALWAYS send
	   PROGRESS message, including slow start operations */
	H323SignalPDU progressPDU;
	H225_Progress_UUIE &prog = progressPDU.BuildProgress(*this);

	if (!mediaWaitForConnect) {
		if (SendFastStartAcknowledge(prog.m_fastStart))
			prog.IncludeOptionalField(H225_Progress_UUIE::e_fastStart);
		else {
			if (connectionState == ShuttingDownConnection)
				return FALSE;

			/* Do early H.245 start */
			earlyStart = TRUE;
			if (!h245Tunneling) {
				if (!H323Connection::StartControlChannel())
					return FALSE;
				prog.IncludeOptionalField(H225_Progress_UUIE::e_h245Address);
				controlChannel->SetUpTransportPDU(prog.m_h245Address, TRUE);
			}
		}
	}
	progressPDU.GetQ931().SetProgressIndicator(Q931::ProgressInbandInformationAvailable);

#ifdef TUNNELLING
	EmbedTunneledInfo(progressPDU);
#endif
	HandleTunnelPDU(&progressPDU);
	WriteSignalPDU(progressPDU);

	return TRUE;
}

H323Connection::AnswerCallResponse MyH323Connection::OnAnswerCall(const PString & caller,
								const H323SignalPDU & setupPDU,
								H323SignalPDU & connectPDU)
{
	unsigned pi;

	if (h323debug) {
		cout << "\t=-= In OnAnswerCall for call " << GetCallReference() << endl;
	}

	if (connectionState == ShuttingDownConnection)
		return H323Connection::AnswerCallDenied;

	if (!setupPDU.GetQ931().GetProgressIndicator(pi)) {
		pi = 0;
	}
	if (h323debug) {
		cout << "\t\t- Progress Indicator: " << pi << endl;
	}
	if (progressAlert) {
		pi = progressAlert;
	} else if (pi == Q931::ProgressOriginNotISDN) {
		pi = Q931::ProgressInbandInformationAvailable;
	}
	if (pi && alertingPDU) {
		alertingPDU->GetQ931().SetProgressIndicator(pi);
	}
	if (h323debug) {
		cout << "\t\t- Inserting PI of " << pi << " into ALERTING message" << endl;
	}

#ifdef TUNNELLING
	if (alertingPDU)
		EmbedTunneledInfo(*alertingPDU);
	EmbedTunneledInfo(connectPDU);
#endif

	if (!on_answer_call(GetCallReference(), (const char *)GetCallToken())) {
		return H323Connection::AnswerCallDenied;
	}
	/* The call will be answered later with "AnsweringCall()" function.
	 */
	return ((pi || (fastStartState != FastStartDisabled)) ? AnswerCallDeferredWithMedia : AnswerCallDeferred);
}

BOOL MyH323Connection::OnAlerting(const H323SignalPDU & alertingPDU, const PString & username)
{
	if (h323debug) {
		cout << "\t=-= In OnAlerting for call " << GetCallReference()
			<< ": sessionId=" << sessionId << endl;
		cout << "\t-- Ringing phone for \"" << username << "\"" << endl;
	}

	if (on_progress) {
		BOOL isInband;
		unsigned alertingPI;

		if (!alertingPDU.GetQ931().GetProgressIndicator(alertingPI)) {
			alertingPI = 0;
		}
		if (h323debug) {
			cout << "\t\t- Progress Indicator: " << alertingPI << endl;
		}

		switch(alertingPI) {
		case Q931::ProgressNotEndToEndISDN:
		case Q931::ProgressInbandInformationAvailable:
			isInband = TRUE;
			break;
		default:
			isInband = FALSE;
		}
		on_progress(GetCallReference(), (const char *)GetCallToken(), isInband);
	}
	on_chan_ringing(GetCallReference(), (const char *)GetCallToken() );
	return connectionState != ShuttingDownConnection;
}

void MyH323Connection::SetCallOptions(void *o, BOOL isIncoming)
{
	call_options_t *opts = (call_options_t *)o;

	progressSetup = opts->progress_setup;
	progressAlert = opts->progress_alert;
	holdHandling = opts->holdHandling;
	dtmfCodec[0] = (RTP_DataFrame::PayloadTypes)opts->dtmfcodec[0];
	dtmfCodec[1] = (RTP_DataFrame::PayloadTypes)opts->dtmfcodec[1];
	dtmfMode = opts->dtmfmode;

	if (isIncoming) {
		fastStartState = (opts->fastStart ? FastStartInitiate : FastStartDisabled);
		h245Tunneling = (opts->h245Tunneling ? TRUE : FALSE);
	} else {
		SetLocalPartyName(PString(opts->cid_num));
		SetDisplayName(PString(opts->cid_name));
		if (opts->redirect_reason >= 0) {
			rdnis = PString(opts->cid_rdnis);
			redirect_reason = opts->redirect_reason;
		}
		cid_presentation = opts->presentation;
		cid_ton = opts->type_of_number;
	}
	tunnelOptions = opts->tunnelOptions;
}

void MyH323Connection::SetCallDetails(void *callDetails, const H323SignalPDU &setupPDU, BOOL isIncoming)
{
	PString sourceE164;
	PString destE164;
	PString sourceAliases;
	PString destAliases;
	char *s, *s1;
	call_details_t *cd = (call_details_t *)callDetails;

	memset(cd, 0, sizeof(*cd));
	cd->call_reference = GetCallReference();
	cd->call_token = strdup((const char *)GetCallToken());

	sourceE164 = "";
	setupPDU.GetSourceE164(sourceE164);
	cd->call_source_e164 = strdup((const char *)sourceE164);

	destE164 = "";
	setupPDU.GetDestinationE164(destE164);
	cd->call_dest_e164 = strdup((const char *)destE164);

	/* XXX Is it possible to have this information for outgoing calls too? XXX */
	if (isIncoming) {
		PString sourceName;
		PIPSocket::Address Ip;
		WORD sourcePort;
		PString redirect_number;
		unsigned redirect_reason;
		unsigned plan, type, screening, presentation;

		/* Fetch presentation and type information about calling party's number */
		if (setupPDU.GetQ931().GetCallingPartyNumber(sourceName, &plan, &type, &presentation, &screening, 2, 3)) {
			/* Construct fields back */
			cd->type_of_number = (type << 4) | screening;
			cd->presentation = (presentation << 5) | screening;
		} else {
			cd->type_of_number = 0;		/* UNKNOWN */
			cd->presentation = 0x43;	/* NUMBER NOT AVAILABLE */
		}

		sourceName = setupPDU.GetQ931().GetDisplayName();
		cd->call_source_name = strdup((const char *)sourceName);

		GetSignallingChannel()->GetRemoteAddress().GetIpAndPort(Ip, sourcePort);
		cd->sourceIp = strdup((const char *)Ip.AsString());

		if(setupPDU.GetQ931().GetRedirectingNumber(redirect_number, NULL, NULL, NULL, NULL, &redirect_reason, 0, 0, 0)) {
			cd->redirect_number = strdup((const char *)redirect_number);
			cd->redirect_reason = redirect_reason;
		}
		else
			cd->redirect_reason = -1;
	}

	/* Convert complex strings */
	//  FIXME: deal more than one source alias
	sourceAliases = setupPDU.GetSourceAliases();
	s1 = strdup((const char *)sourceAliases);
	if ((s = strchr(s1, ' ')) != NULL)
		*s = '\0';
	if ((s = strchr(s1, '\t')) != NULL)
		*s = '\0';
	cd->call_source_aliases = s1;

	destAliases = setupPDU.GetDestinationAlias();
	s1 = strdup((const char *)destAliases);
	if ((s = strchr(s1, ' ')) != NULL)
		*s = '\0';
	if ((s = strchr(s1, '\t')) != NULL)
		*s = '\0';
	cd->call_dest_alias = s1;
}

#ifdef TUNNELLING
static BOOL FetchInformationElements(Q931 &q931, const PBYTEArray &data)
{
	PINDEX offset = 0;

	while (offset < data.GetSize()) {
		// Get field discriminator
		int discriminator = data[offset++];

#if 0
		/* Do not overwrite existing IEs */
		if (q931.HasIE((Q931::InformationElementCodes)discriminator)) {
			if ((discriminatir & 0x80) == 0)
				offset += data[offset++];
			if (offset > data.GetSize())
				return FALSE;
			continue;
		}
#endif

		PBYTEArray * item = new PBYTEArray;

		// For discriminator with high bit set there is no data
		if ((discriminator & 0x80) == 0) {
			int len = data[offset++];

#if 0		// That is not H.225 but regular Q.931 (ISDN) IEs
			if (discriminator == UserUserIE) {
				// Special case of User-user field. See 7.2.2.31/H.225.0v4.
				len <<= 8;
				len |= data[offset++];

				// we also have a protocol discriminator, which we ignore
				offset++;

				// before decrementing the length, make sure it is not zero
				if (len == 0)
					return FALSE;

				// adjust for protocol discriminator
				len--;
			}
#endif

			if (offset + len > data.GetSize()) {
				delete item;
				return FALSE;
			}

			memcpy(item->GetPointer(len), (const BYTE *)data+offset, len);
			offset += len;
		}

		q931.SetIE((Q931::InformationElementCodes)discriminator, *item);
		delete item;
	}
	return TRUE;
}

static BOOL FetchCiscoTunneledInfo(Q931 &q931, const H323SignalPDU &pdu)
{
	BOOL res = FALSE;
	const H225_H323_UU_PDU &uuPDU = pdu.m_h323_uu_pdu;

	if(uuPDU.HasOptionalField(H225_H323_UU_PDU::e_nonStandardControl)) {
		for(int i = 0; i < uuPDU.m_nonStandardControl.GetSize(); ++i) {
			const H225_NonStandardParameter &np = uuPDU.m_nonStandardControl[i];
			const H225_NonStandardIdentifier &id = np.m_nonStandardIdentifier;
			if (id.GetTag() == H225_NonStandardIdentifier::e_h221NonStandard) {
				const H225_H221NonStandard &ni = id;
				/* Check for Cisco */
				if ((ni.m_t35CountryCode == 181) && (ni.m_t35Extension == 0) && (ni.m_manufacturerCode == 18)) {
					const PBYTEArray &data = np.m_data;
					if (h323debug)
						cout << setprecision(0) << "Received non-standard Cisco extension data " << np.m_data << endl;
					CISCO_H225_H323_UU_NonStdInfo c;
					PPER_Stream strm(data);
					if (c.Decode(strm)) {
						BOOL haveIEs = FALSE;
						if (h323debug)
							cout << setprecision(0) << "H323_UU_NonStdInfo = " << c << endl;
						if (c.HasOptionalField(CISCO_H225_H323_UU_NonStdInfo::e_protoParam)) {
							FetchInformationElements(q931, c.m_protoParam.m_qsigNonStdInfo.m_rawMesg);
							haveIEs = TRUE;
						}
						if (c.HasOptionalField(CISCO_H225_H323_UU_NonStdInfo::e_commonParam)) {
							FetchInformationElements(q931, c.m_commonParam.m_redirectIEinfo.m_redirectIE);
							haveIEs = TRUE;
						}
						if (haveIEs && h323debug)
							cout << setprecision(0) << "Information elements collected:" << q931 << endl;
						res = TRUE;
					} else {
						cout << "ERROR while decoding non-standard Cisco extension" << endl;
						return FALSE;
					}
				}
			}
		}
	}
	return res;
}

static BOOL EmbedCiscoTunneledInfo(H323SignalPDU &pdu)
{
	const static struct {
		Q931::InformationElementCodes ie;
		BOOL dontDelete;
	} codes[] = {
		{ Q931::RedirectingNumberIE, },
		{ Q931::FacilityIE, },
		{ Q931::CallingPartyNumberIE, TRUE },
	};

	BOOL res = FALSE;
	BOOL notRedirOnly = FALSE;
	Q931 tmpQ931;
	Q931 &q931 = pdu.GetQ931();

	for(unsigned i = 0; i < (sizeof(codes) / sizeof(codes[0])); ++i) {
		if (q931.HasIE(codes[i].ie)) {
			tmpQ931.SetIE(codes[i].ie, q931.GetIE(codes[i].ie));
			if (!codes[i].dontDelete)
				q931.RemoveIE(codes[i].ie);
			if (codes[i].ie != Q931::RedirectingNumberIE)
				notRedirOnly = TRUE;
			res = TRUE;
		}
	}
	/* Have something to embed */
	if (res) {
		PBYTEArray msg;
		if (!tmpQ931.Encode(msg))
			return FALSE;
		PBYTEArray ies(msg.GetPointer() + 5, msg.GetSize() - 5);

		H225_H323_UU_PDU &uuPDU = pdu.m_h323_uu_pdu;
		if(!uuPDU.HasOptionalField(H225_H323_UU_PDU::e_nonStandardControl)) {
			uuPDU.IncludeOptionalField(H225_H323_UU_PDU::e_nonStandardControl);
			uuPDU.m_nonStandardControl.SetSize(0);
		}
		H225_NonStandardParameter *np = new H225_NonStandardParameter;
		uuPDU.m_nonStandardControl.Append(np);
		H225_NonStandardIdentifier &nsi = (*np).m_nonStandardIdentifier;
		nsi.SetTag(H225_NonStandardIdentifier::e_h221NonStandard);
		H225_H221NonStandard &ns = nsi;
		ns.m_t35CountryCode = 181;
		ns.m_t35Extension = 0;
		ns.m_manufacturerCode = 18;

		CISCO_H225_H323_UU_NonStdInfo c;
		c.IncludeOptionalField(CISCO_H225_H323_UU_NonStdInfo::e_version);
		c.m_version = 0;

		if (notRedirOnly) {
			c.IncludeOptionalField(CISCO_H225_H323_UU_NonStdInfo::e_protoParam);
			CISCO_H225_QsigNonStdInfo &qsigInfo = c.m_protoParam.m_qsigNonStdInfo;
			qsigInfo.m_iei = ies[0];
			qsigInfo.m_rawMesg = ies;
		} else {
			c.IncludeOptionalField(CISCO_H225_H323_UU_NonStdInfo::e_commonParam);
			c.m_commonParam.m_redirectIEinfo.m_redirectIE = ies;
		}
		PPER_Stream stream;
		c.Encode(stream);
		stream.CompleteEncoding();
		(*np).m_data = stream;
	}
	return res;
}

static const char OID_QSIG[] = "1.3.12.9";

static BOOL FetchQSIGTunneledInfo(Q931 &q931, const H323SignalPDU &pdu)
{
	BOOL res = FALSE;
	const H225_H323_UU_PDU &uuPDU = pdu.m_h323_uu_pdu;
	if (uuPDU.HasOptionalField(H225_H323_UU_PDU::e_tunnelledSignallingMessage)) {
		const H225_H323_UU_PDU_tunnelledSignallingMessage &sig = uuPDU.m_tunnelledSignallingMessage;
		const H225_TunnelledProtocol_id &proto = sig.m_tunnelledProtocolID.m_id;
		if ((proto.GetTag() == H225_TunnelledProtocol_id::e_tunnelledProtocolObjectID) &&
				(((const PASN_ObjectId &)proto).AsString() == OID_QSIG)) {
			const H225_ArrayOf_PASN_OctetString &sigs = sig.m_messageContent;
			for(int i = 0; i < sigs.GetSize(); ++i) {
				const PASN_OctetString &msg = sigs[i];
				if (h323debug)
					cout << setprecision(0) << "Q.931 message data is " << msg << endl;
				if(!q931.Decode((const PBYTEArray &)msg)) {
					cout << "Error while decoding Q.931 message" << endl;
					return FALSE;
				}
				res = TRUE;
				if (h323debug)
					cout << setprecision(0) << "Received QSIG message " << q931 << endl;
			}
		}
	}
	return res;
}

static H225_EndpointType *GetEndpointType(H323SignalPDU &pdu)
{
	if (!pdu.GetQ931().HasIE(Q931::UserUserIE))
		return NULL;

	H225_H323_UU_PDU_h323_message_body &body = pdu.m_h323_uu_pdu.m_h323_message_body;
	switch (body.GetTag()) {
	case H225_H323_UU_PDU_h323_message_body::e_setup:
		return &((H225_Setup_UUIE &)body).m_sourceInfo;
	case H225_H323_UU_PDU_h323_message_body::e_callProceeding:
		return &((H225_CallProceeding_UUIE &)body).m_destinationInfo;
	case H225_H323_UU_PDU_h323_message_body::e_connect:
		return &((H225_Connect_UUIE &)body).m_destinationInfo;
	case H225_H323_UU_PDU_h323_message_body::e_alerting:
		return &((H225_Alerting_UUIE &)body).m_destinationInfo;
	case H225_H323_UU_PDU_h323_message_body::e_facility:
		return &((H225_Facility_UUIE &)body).m_destinationInfo;
	case H225_H323_UU_PDU_h323_message_body::e_progress:
		return &((H225_Progress_UUIE &)body).m_destinationInfo;
	}
	return NULL;
}

static BOOL QSIGTunnelRequested(H323SignalPDU &pdu)
{
	H225_EndpointType *epType = GetEndpointType(pdu);
	if (epType) {
		if (!(*epType).HasOptionalField(H225_EndpointType::e_supportedTunnelledProtocols)) {
			return FALSE;
		}
		H225_ArrayOf_TunnelledProtocol &protos = (*epType).m_supportedTunnelledProtocols;
		for (int i = 0; i < protos.GetSize(); ++i)
		{
			if ((protos[i].GetTag() == H225_TunnelledProtocol_id::e_tunnelledProtocolObjectID) &&
					(((const PASN_ObjectId &)protos[i]).AsString() == OID_QSIG)) {
				return TRUE;
			}
		}
	}
	return FALSE;
}

static BOOL EmbedQSIGTunneledInfo(H323SignalPDU &pdu)
{
	const static Q931::InformationElementCodes codes[] =
	{ Q931::RedirectingNumberIE, Q931::FacilityIE };

	Q931 &q931 = pdu.GetQ931();
	PBYTEArray message;

	q931.Encode(message);

	/* Remove non-standard IEs */
	for(unsigned i = 0; i < (sizeof(codes) / sizeof(codes[0])); ++i) {
		if (q931.HasIE(codes[i])) {
			q931.RemoveIE(codes[i]);
		}
	}

	H225_H323_UU_PDU &uuPDU = pdu.m_h323_uu_pdu;
	H225_EndpointType *epType = GetEndpointType(pdu);
	if (epType) {
		if (!(*epType).HasOptionalField(H225_EndpointType::e_supportedTunnelledProtocols)) {
			(*epType).IncludeOptionalField(H225_EndpointType::e_supportedTunnelledProtocols);
			(*epType).m_supportedTunnelledProtocols.SetSize(0);
		}
		H225_ArrayOf_TunnelledProtocol &protos = (*epType).m_supportedTunnelledProtocols;
		BOOL addQSIG = TRUE;
		for (int i = 0; i < protos.GetSize(); ++i)
		{
			if ((protos[i].GetTag() == H225_TunnelledProtocol_id::e_tunnelledProtocolObjectID) &&
					(((PASN_ObjectId &)protos[i]).AsString() == OID_QSIG)) {
				addQSIG = FALSE;
				break;
			}
		}
		if (addQSIG) {
			H225_TunnelledProtocol *proto = new H225_TunnelledProtocol;
			(*proto).m_id.SetTag(H225_TunnelledProtocol_id::e_tunnelledProtocolObjectID);
			(PASN_ObjectId &)(proto->m_id) = OID_QSIG;
			protos.Append(proto);
		}
	}
	if (!uuPDU.HasOptionalField(H225_H323_UU_PDU::e_tunnelledSignallingMessage))
		uuPDU.IncludeOptionalField(H225_H323_UU_PDU::e_tunnelledSignallingMessage);
	H225_H323_UU_PDU_tunnelledSignallingMessage &sig = uuPDU.m_tunnelledSignallingMessage;
	H225_TunnelledProtocol_id &proto = sig.m_tunnelledProtocolID.m_id;
	if ((proto.GetTag() != H225_TunnelledProtocol_id::e_tunnelledProtocolObjectID) ||
			(((const PASN_ObjectId &)proto).AsString() != OID_QSIG)) {
		proto.SetTag(H225_TunnelledProtocol_id::e_tunnelledProtocolObjectID);
		(PASN_ObjectId &)proto = OID_QSIG;
		sig.m_messageContent.SetSize(0);
	}
	PASN_OctetString *msg = new PASN_OctetString;
	sig.m_messageContent.Append(msg);
	*msg = message;
	return TRUE;
}

BOOL MyH323Connection::EmbedTunneledInfo(H323SignalPDU &pdu)
{
	if ((tunnelOptions & H323_TUNNEL_QSIG) || (remoteTunnelOptions & H323_TUNNEL_QSIG))
		EmbedQSIGTunneledInfo(pdu);
	if ((tunnelOptions & H323_TUNNEL_CISCO) || (remoteTunnelOptions & H323_TUNNEL_CISCO))
		EmbedCiscoTunneledInfo(pdu);

	return TRUE;
}

/* Handle tunneled messages */
BOOL MyH323Connection::HandleSignalPDU(H323SignalPDU &pdu)
{
	if (pdu.GetQ931().HasIE(Q931::UserUserIE)) {
		Q931 tunneledInfo;
		const Q931 *q931Info;

		q931Info = NULL;
		if (FetchCiscoTunneledInfo(tunneledInfo, pdu)) {
			q931Info = &tunneledInfo;
			remoteTunnelOptions |= H323_TUNNEL_CISCO;
		}
		if (FetchQSIGTunneledInfo(tunneledInfo, pdu)) {
			q931Info = &tunneledInfo;
			remoteTunnelOptions |= H323_TUNNEL_QSIG;
		}
		if (!(remoteTunnelOptions & H323_TUNNEL_QSIG) && QSIGTunnelRequested(pdu)) {
			remoteTunnelOptions |= H323_TUNNEL_QSIG;
		}
		if (q931Info) {
			if (q931Info->HasIE(Q931::RedirectingNumberIE)) {
				pdu.GetQ931().SetIE(Q931::RedirectingNumberIE, q931Info->GetIE(Q931::RedirectingNumberIE));
				if (h323debug) {
					PString number;
					unsigned reason;
					if(q931Info->GetRedirectingNumber(number, NULL, NULL, NULL, NULL, &reason, 0, 0, 0))
						cout << "Got redirection from " << number << ", reason " << reason << endl;
				}
			}
		}
	}

	return H323Connection::HandleSignalPDU(pdu);
}
#endif

BOOL MyH323Connection::OnReceivedSignalSetup(const H323SignalPDU & setupPDU)
{
	call_details_t cd;

	if (h323debug) {
		cout << "\t--Received SETUP message" << endl;
	}

	if (connectionState == ShuttingDownConnection)
		return FALSE;

	SetCallDetails(&cd, setupPDU, TRUE);

	/* Notify Asterisk of the request */
	call_options_t *res = on_incoming_call(&cd);

	if (!res) {
		if (h323debug) {
			cout << "\t-- Call Failed" << endl;
		}
		return FALSE;
	}

	SetCallOptions(res, TRUE);

	/* Disable fastStart if requested by remote side */
	if (h245Tunneling && !setupPDU.m_h323_uu_pdu.m_h245Tunneling) {
		masterSlaveDeterminationProcedure->Stop();
		capabilityExchangeProcedure->Stop();
		PTRACE(3, "H225\tFast Start DISABLED!");
		h245Tunneling = FALSE;
	}

	return H323Connection::OnReceivedSignalSetup(setupPDU);
}

BOOL MyH323Connection::OnSendSignalSetup(H323SignalPDU & setupPDU)
{
	call_details_t cd;

	if (h323debug) {
		cout << "\t-- Sending SETUP message" << endl;
	}

	if (connectionState == ShuttingDownConnection)
		return FALSE;

	if (progressSetup)
		setupPDU.GetQ931().SetProgressIndicator(progressSetup);

	if (redirect_reason >= 0) {
		setupPDU.GetQ931().SetRedirectingNumber(rdnis, 0, 0, 0, 0, redirect_reason);
		/* OpenH323 incorrectly fills number IE when redirecting reason is specified - fix it */
		PBYTEArray IE(setupPDU.GetQ931().GetIE(Q931::RedirectingNumberIE));
		IE[0] = IE[0] & 0x7f;
		IE[1] = IE[1] & 0x7f;
		setupPDU.GetQ931().SetIE(Q931::RedirectingNumberIE, IE);
	}

	SetCallDetails(&cd, setupPDU, FALSE);

	int res = on_outgoing_call(&cd);
	if (!res) {
		if (h323debug) {
			cout << "\t-- Call Failed" << endl;
		}
		return FALSE;
	}

	/* OpenH323 will build calling party information with default
	   type and presentation information, so build it to be recorded
	   by embedding routines */
	setupPDU.GetQ931().SetCallingPartyNumber(GetLocalPartyName(), (cid_ton >> 4) & 0x07,
			cid_ton & 0x0f, (cid_presentation >> 5) & 0x03, cid_presentation & 0x1f);

#ifdef TUNNELLING
	EmbedTunneledInfo(setupPDU);
#endif

	return H323Connection::OnSendSignalSetup(setupPDU);
}

BOOL MyH323Connection::OnSendReleaseComplete(H323SignalPDU & releaseCompletePDU)
{
	if (h323debug) {
		cout << "\t-- Sending RELEASE COMPLETE" << endl;
	}
	if (cause > 0)
		releaseCompletePDU.GetQ931().SetCause((Q931::CauseValues)cause);

#ifdef TUNNELLING
	EmbedTunneledInfo(releaseCompletePDU);
#endif

	return H323Connection::OnSendReleaseComplete(releaseCompletePDU);
}

BOOL MyH323Connection::OnReceivedFacility(const H323SignalPDU & pdu)
{
	if (h323debug) {
		cout << "\t-- Received Facility message... " << endl;
	}
	return H323Connection::OnReceivedFacility(pdu);
}

void MyH323Connection::OnReceivedReleaseComplete(const H323SignalPDU & pdu)
{
	if (h323debug) {
		cout << "\t-- Received RELEASE COMPLETE message..." << endl;
	}
	if (on_hangup)
		on_hangup(GetCallReference(), (const char *)GetCallToken(), pdu.GetQ931().GetCause());
	return H323Connection::OnReceivedReleaseComplete(pdu);
}

BOOL MyH323Connection::OnClosingLogicalChannel(H323Channel & channel)
{
	if (h323debug) {
		cout << "\t-- Closing logical channel..." << endl;
	}
	return H323Connection::OnClosingLogicalChannel(channel);
}

void MyH323Connection::SendUserInputTone(char tone, unsigned duration, unsigned logicalChannel, unsigned rtpTimestamp)
{
	SendUserInputModes mode = GetRealSendUserInputMode();
//	That is recursive call... Why?
//	on_receive_digit(GetCallReference(), tone, (const char *)GetCallToken());
	if ((tone != ' ') || (mode == SendUserInputAsTone) || (mode == SendUserInputAsInlineRFC2833)) {
		if (h323debug) {
			cout << "\t-- Sending user input tone (" << tone << ") to remote" << endl;
		}
		H323Connection::SendUserInputTone(tone, duration);
	}
}

void MyH323Connection::OnUserInputTone(char tone, unsigned duration, unsigned logicalChannel, unsigned rtpTimestamp)
{
	/* Why we should check this? */
	if ((dtmfMode & (H323_DTMF_CISCO | H323_DTMF_RFC2833 | H323_DTMF_SIGNAL)) != 0) {
		if (h323debug) {
			cout << "\t-- Received user input tone (" << tone << ") from remote" << endl;
		}
		on_receive_digit(GetCallReference(), tone, (const char *)GetCallToken(), duration);
	}
}

void MyH323Connection::OnUserInputString(const PString &value)
{
	if (h323debug) {
		cout << "\t-- Received user input string (" << value << ") from remote." << endl;
	}
	on_receive_digit(GetCallReference(), value[0], (const char *)GetCallToken(), 0);
}

void MyH323Connection::OnSendCapabilitySet(H245_TerminalCapabilitySet & pdu)
{
	PINDEX i;

	H323Connection::OnSendCapabilitySet(pdu);

	H245_ArrayOf_CapabilityTableEntry & tables = pdu.m_capabilityTable;
	for(i = 0; i < tables.GetSize(); i++)
	{
		H245_CapabilityTableEntry & entry = tables[i];
		if (entry.HasOptionalField(H245_CapabilityTableEntry::e_capability)) {
			H245_Capability & cap = entry.m_capability;
			if (cap.GetTag() == H245_Capability::e_receiveRTPAudioTelephonyEventCapability) {
				H245_AudioTelephonyEventCapability & atec = cap;
				atec.m_dynamicRTPPayloadType = dtmfCodec[0];
//				on_set_rfc2833_payload(GetCallReference(), (const char *)GetCallToken(), (int)dtmfCodec[0]);
				if (h323debug) {
					cout << "\t-- Receiving RFC2833 on payload " <<
						atec.m_dynamicRTPPayloadType << endl;
				}
			}
		}
	}
}

void MyH323Connection::OnSetLocalCapabilities()
{
	if (on_setcapabilities)
		on_setcapabilities(GetCallReference(), (const char *)callToken);
}

BOOL MyH323Connection::OnReceivedCapabilitySet(const H323Capabilities & remoteCaps,
							const H245_MultiplexCapability * muxCap,
							H245_TerminalCapabilitySetReject & reject)
{
	struct __codec__ {
		unsigned int asterisk_codec;
		unsigned int h245_cap;
		const char *oid;
		const char *formatName;
	};
	static const struct __codec__ codecs[] = {
		{ AST_FORMAT_G723_1, H245_AudioCapability::e_g7231 },
		{ AST_FORMAT_GSM, H245_AudioCapability::e_gsmFullRate },
		{ AST_FORMAT_ULAW, H245_AudioCapability::e_g711Ulaw64k },
		{ AST_FORMAT_ALAW, H245_AudioCapability::e_g711Alaw64k },
		{ AST_FORMAT_G729A, H245_AudioCapability::e_g729AnnexA },
		{ AST_FORMAT_G729A, H245_AudioCapability::e_g729 },
		{ AST_FORMAT_G726_AAL2, H245_AudioCapability::e_nonStandard, NULL, CISCO_G726r32 },
#ifdef AST_FORMAT_MODEM
		{ AST_FORMAT_MODEM, H245_DataApplicationCapability_application::e_t38fax },
#endif
		{ 0 }
	};

#if 0
	static const struct __codec__ vcodecs[] = {
#ifdef HAVE_H261
		{ AST_FORMAT_H261, H245_VideoCapability::e_h261VideoCapability },
#endif
#ifdef HAVE_H263
		{ AST_FORMAT_H263, H245_VideoCapability::e_h263VideoCapability },
#endif
#ifdef HAVE_H264
		{ AST_FORMAT_H264, H245_VideoCapability::e_genericVideoCapability, "0.0.8.241.0.0.1" },
#endif
		{ 0 }
	};
#endif
	struct ast_codec_pref prefs;
	RTP_DataFrame::PayloadTypes pt;

	if (!H323Connection::OnReceivedCapabilitySet(remoteCaps, muxCap, reject)) {
		return FALSE;
	}

	memset(&prefs, 0, sizeof(prefs));
	int peer_capabilities = 0;
	for (int i = 0; i < remoteCapabilities.GetSize(); ++i) {
		unsigned int subType = remoteCapabilities[i].GetSubType();
		if (h323debug) {
			cout << "Peer capability is " << remoteCapabilities[i] << endl;
		}
		switch(remoteCapabilities[i].GetMainType()) {
		case H323Capability::e_Audio:
			for (int x = 0; codecs[x].asterisk_codec > 0; ++x) {
				if ((subType == codecs[x].h245_cap) && (!codecs[x].formatName || (!strcmp(codecs[x].formatName, (const char *)remoteCapabilities[i].GetFormatName())))) {
					int ast_codec = codecs[x].asterisk_codec;
					int ms = 0;
					if (!(peer_capabilities & ast_codec)) {
						struct ast_format_list format;
						ast_codec_pref_append(&prefs, ast_codec);
						format = ast_codec_pref_getsize(&prefs, ast_codec);
						if ((ast_codec == AST_FORMAT_ALAW) || (ast_codec == AST_FORMAT_ULAW)) {
							ms = remoteCapabilities[i].GetTxFramesInPacket();
							if (ms > 60)
								ms = format.cur_ms;
						} else
							ms = remoteCapabilities[i].GetTxFramesInPacket() * format.inc_ms;
						ast_codec_pref_setsize(&prefs, ast_codec, ms);
					}
					if (h323debug) {
						cout << "Found peer capability " << remoteCapabilities[i] << ", Asterisk code is " << ast_codec << ", frame size (in ms) is " << ms << endl;
					}
					peer_capabilities |= ast_codec;
				}
			}
			break;
		case H323Capability::e_Data:
			if (!strcmp((const char *)remoteCapabilities[i].GetFormatName(), CISCO_DTMF_RELAY)) {
				pt = remoteCapabilities[i].GetPayloadType();
				if ((dtmfMode & H323_DTMF_CISCO) != 0) {
					on_set_rfc2833_payload(GetCallReference(), (const char *)GetCallToken(), (int)pt, 1);
//					if (sendUserInputMode == SendUserInputAsTone)
//						sendUserInputMode = SendUserInputAsInlineRFC2833;
				}
				if (h323debug) {
					cout << "\t-- Outbound Cisco RTP DTMF on payload " << pt << endl;
				}
			}
			break;
		case H323Capability::e_UserInput:
			if (!strcmp((const char *)remoteCapabilities[i].GetFormatName(), H323_UserInputCapability::SubTypeNames[H323_UserInputCapability::SignalToneRFC2833])) {
				pt = remoteCapabilities[i].GetPayloadType();
				if ((dtmfMode & H323_DTMF_RFC2833) != 0) {
					on_set_rfc2833_payload(GetCallReference(), (const char *)GetCallToken(), (int)pt, 0);
//					if (sendUserInputMode == SendUserInputAsTone)
//						sendUserInputMode = SendUserInputAsInlineRFC2833;
				}
				if (h323debug) {
					cout << "\t-- Outbound RFC2833 on payload " << pt << endl;
				}
			}
			break;
#if 0
		case H323Capability::e_Video:
			for (int x = 0; vcodecs[x].asterisk_codec > 0; ++x) {
				if (subType == vcodecs[x].h245_cap) {
					H245_CapabilityIdentifier *cap = NULL;
					H245_GenericCapability y;
					if (vcodecs[x].oid) {
						cap = new H245_CapabilityIdentifier(H245_CapabilityIdentifier::e_standard);
						PASN_ObjectId &object_id = *cap;
						object_id = vcodecs[x].oid;
						y.m_capabilityIdentifier = *cap;
					}
					if ((subType != H245_VideoCapability::e_genericVideoCapability) ||
							(vcodecs[x].oid && ((const H323GenericVideoCapability &)remoteCapabilities[i]).IsGenericMatch((const H245_GenericCapability)y))) {
						if (h323debug) {
							cout << "Found peer video capability " << remoteCapabilities[i] << ", Asterisk code is " << vcodecs[x].asterisk_codec << endl;
						}
						peer_capabilities |= vcodecs[x].asterisk_codec;
					}
					if (cap)
						delete(cap);
				}
			}
			break;
#endif
		default:
			break;
		}
	}
	if (h323debug) {
		char caps_str[1024], caps2_str[1024];
		ast_codec_pref_string(&prefs, caps2_str, sizeof(caps2_str));
		cout << "Peer capabilities = " << ast_getformatname_multiple(caps_str, sizeof(caps_str), peer_capabilities)
				<< ", ordered list is " << caps2_str << endl;
	}
#if 0
	redir_capabilities &= peer_capabilities;
#endif
	if (on_setpeercapabilities)
		on_setpeercapabilities(GetCallReference(), (const char *)callToken, peer_capabilities, &prefs);

	return TRUE;
}

H323Channel * MyH323Connection::CreateRealTimeLogicalChannel(const H323Capability & capability,
									H323Channel::Directions dir,
									unsigned sessionID,
									const H245_H2250LogicalChannelParameters * /*param*/,
									RTP_QOS * /*param*/ )
{
	/* Do not open tx channel when transmitter has been paused by empty TCS */
	if ((dir == H323Channel::IsTransmitter) && transmitterSidePaused)
		return NULL;

	return new MyH323_ExternalRTPChannel(*this, capability, dir, sessionID);
}

/** This callback function is invoked once upon creation of each
  * channel for an H323 session
  */
BOOL MyH323Connection::OnStartLogicalChannel(H323Channel & channel)
{
	/* Increase the count of channels we have open */
	channelsOpen++;

	if (h323debug) {
		cout << "\t-- Started logical channel: "
				<< ((channel.GetDirection() == H323Channel::IsTransmitter) ? "sending " : ((channel.GetDirection() == H323Channel::IsReceiver) ? "receiving " : " "))
				<< (const char *)(channel.GetCapability()).GetFormatName() << endl;
		cout << "\t\t-- channelsOpen = " << channelsOpen << endl;
	}
	return connectionState != ShuttingDownConnection;
}

void MyH323Connection::SetCapabilities(int caps, int dtmf_mode, void *_prefs, int pref_codec)
{
	PINDEX lastcap = -1; /* last common capability index */
	int alreadysent = 0;
	int codec;
	int x, y;
	char caps_str[1024];
	struct ast_codec_pref *prefs = (struct ast_codec_pref *)_prefs;
	struct ast_format_list format;
	int frames_per_packet;
	int max_frames_per_packet;
	H323Capability *cap;

	localCapabilities.RemoveAll();

	if (h323debug) {
		cout << "Setting capabilities to " << ast_getformatname_multiple(caps_str, sizeof(caps_str), caps) << endl;
		ast_codec_pref_string(prefs, caps_str, sizeof(caps_str));
		cout << "Capabilities in preference order is " << caps_str << endl;
	}
	/* Add audio codecs in preference order first, then
	   audio codecs without preference as allowed by mask */
	for (y = 0, x = -1; x < 32 + 32; ++x) {
		if (x < 0)
			codec = pref_codec;
		else if (y || (!(codec = ast_codec_pref_index(prefs, x)))) {
			if (!y)
				y = 1;
			else if (y == AST_FORMAT_MAX_AUDIO)
				break;
			else
				y <<= 1;
			codec = y;
		}
		if (!(caps & codec) || (alreadysent & codec) || !(codec & AST_FORMAT_AUDIO_MASK))
			continue;
		alreadysent |= codec;
		format = ast_codec_pref_getsize(prefs, codec);
		frames_per_packet = (format.inc_ms ? format.cur_ms / format.inc_ms : format.cur_ms);
		max_frames_per_packet = (format.inc_ms ? format.max_ms / format.inc_ms : 0);
		switch(codec) {
#if 0
		case AST_FORMAT_SPEEX:
			/* Not real sure if Asterisk acutally supports all
			   of the various different bit rates so add them
			   all and figure it out later*/

			lastcap = localCapabilities.SetCapability(0, 0, new SpeexNarrow2AudioCapability());
			lastcap = localCapabilities.SetCapability(0, 0, new SpeexNarrow3AudioCapability());
			lastcap = localCapabilities.SetCapability(0, 0, new SpeexNarrow4AudioCapability());
			lastcap = localCapabilities.SetCapability(0, 0, new SpeexNarrow5AudioCapability());
			lastcap = localCapabilities.SetCapability(0, 0, new SpeexNarrow6AudioCapability());
			break;
#endif
		case AST_FORMAT_G729A:
			AST_G729ACapability *g729aCap;
			AST_G729Capability *g729Cap;
			lastcap = localCapabilities.SetCapability(0, 0, g729aCap = new AST_G729ACapability(frames_per_packet));
			lastcap = localCapabilities.SetCapability(0, 0, g729Cap = new AST_G729Capability(frames_per_packet));
			if (max_frames_per_packet) {
				g729aCap->SetTxFramesInPacket(max_frames_per_packet);
				g729Cap->SetTxFramesInPacket(max_frames_per_packet);
			}
			break;
		case AST_FORMAT_G723_1:
			AST_G7231Capability *g7231Cap;
			lastcap = localCapabilities.SetCapability(0, 0, g7231Cap = new AST_G7231Capability(frames_per_packet, TRUE));
			if (max_frames_per_packet)
				g7231Cap->SetTxFramesInPacket(max_frames_per_packet);
			lastcap = localCapabilities.SetCapability(0, 0, g7231Cap = new AST_G7231Capability(frames_per_packet, FALSE));
			if (max_frames_per_packet)
				g7231Cap->SetTxFramesInPacket(max_frames_per_packet);
			break;
		case AST_FORMAT_GSM:
			AST_GSM0610Capability *gsmCap;
			lastcap = localCapabilities.SetCapability(0, 0, gsmCap = new AST_GSM0610Capability(frames_per_packet));
			if (max_frames_per_packet)
				gsmCap->SetTxFramesInPacket(max_frames_per_packet);
			break;
		case AST_FORMAT_ULAW:
			AST_G711Capability *g711uCap;
			lastcap = localCapabilities.SetCapability(0, 0, g711uCap = new AST_G711Capability(format.cur_ms, H323_G711Capability::muLaw));
			if (format.max_ms)
				g711uCap->SetTxFramesInPacket(format.max_ms);
			break;
		case AST_FORMAT_ALAW:
			AST_G711Capability *g711aCap;
			lastcap = localCapabilities.SetCapability(0, 0, g711aCap = new AST_G711Capability(format.cur_ms, H323_G711Capability::ALaw));
			if (format.max_ms)
				g711aCap->SetTxFramesInPacket(format.max_ms);
			break;
		case AST_FORMAT_G726_AAL2:
			AST_CiscoG726Capability *g726Cap;
			lastcap = localCapabilities.SetCapability(0, 0, g726Cap = new AST_CiscoG726Capability(frames_per_packet));
			if (max_frames_per_packet)
				g726Cap->SetTxFramesInPacket(max_frames_per_packet);
			break;
		default:
			alreadysent &= ~codec;
			break;
		}
	}

	cap = new H323_UserInputCapability(H323_UserInputCapability::HookFlashH245);
	if (cap && cap->IsUsable(*this)) {
		lastcap++;
		lastcap = localCapabilities.SetCapability(0, lastcap, cap);
	} else if (cap)
		delete cap;				/* Capability is not usable */

	dtmfMode = dtmf_mode;
	if (h323debug) {
		cout << "DTMF mode is " << (int)dtmfMode << endl;
	}
	if (dtmfMode) {
		lastcap++;
		if (dtmfMode == H323_DTMF_INBAND) {
			cap = new H323_UserInputCapability(H323_UserInputCapability::BasicString);
			if (cap && cap->IsUsable(*this)) {
				lastcap = localCapabilities.SetCapability(0, lastcap, cap);
			} else if (cap)
				delete cap;		/* Capability is not usable */
			sendUserInputMode = SendUserInputAsString;
		} else {
			if ((dtmfMode & H323_DTMF_RFC2833) != 0) {
				cap = new H323_UserInputCapability(H323_UserInputCapability::SignalToneRFC2833);
				if (cap && cap->IsUsable(*this))
					lastcap = localCapabilities.SetCapability(0, lastcap, cap);
				else {
					dtmfMode |= H323_DTMF_SIGNAL;
					if (cap)
						delete cap;	/* Capability is not usable */
				}
			}
			if ((dtmfMode & H323_DTMF_CISCO) != 0) {
				/* Try Cisco's RTP DTMF relay too, but prefer RFC2833 or h245-signal */
				cap = new AST_CiscoDtmfCapability();
				if (cap && cap->IsUsable(*this)) {
					lastcap = localCapabilities.SetCapability(0, lastcap, cap);
					/* We cannot send Cisco RTP DTMFs, use h245-signal instead */
					dtmfMode |= H323_DTMF_SIGNAL;
				} else {
					dtmfMode |= H323_DTMF_SIGNAL;
					if (cap)
						delete cap;	/* Capability is not usable */
				}
			}
			if ((dtmfMode & H323_DTMF_SIGNAL) != 0) {
				/* Cisco usually sends DTMF correctly only through h245-alphanumeric or h245-signal */
				cap = new H323_UserInputCapability(H323_UserInputCapability::SignalToneH245);
				if (cap && cap->IsUsable(*this))
					lastcap = localCapabilities.SetCapability(0, lastcap, cap);
				else if (cap)
					delete cap;	/* Capability is not usable */
			}
			sendUserInputMode = SendUserInputAsTone;	/* RFC2833 transmission handled at Asterisk level */
		}
	}

	if (h323debug) {
		cout << "Allowed Codecs for " << GetCallToken() << " (" << GetSignallingChannel()->GetLocalAddress() << "):\n\t" << setprecision(2) << localCapabilities << endl;
	}
}

BOOL MyH323Connection::StartControlChannel(const H225_TransportAddress & h245Address)
{
	// Check that it is an IP address, all we support at the moment
	if (h245Address.GetTag() != H225_TransportAddress::e_ipAddress
#if P_HAS_IPV6
		&& h245Address.GetTag() != H225_TransportAddress::e_ip6Address
#endif
	) {
		PTRACE(1, "H225\tConnect of H245 failed: Unsupported transport");
		return FALSE;
	}

	// Already have the H245 channel up.
	if (controlChannel != NULL)
		return TRUE;

	PIPSocket::Address addr;
	WORD port;
	GetSignallingChannel()->GetLocalAddress().GetIpAndPort(addr, port);
	if (addr) {
		if (h323debug)
			cout << "Using " << addr << " for outbound H.245 transport" << endl;
		controlChannel = new MyH323TransportTCP(endpoint, addr);
	} else
		controlChannel = new H323TransportTCP(endpoint);
	if (!controlChannel->SetRemoteAddress(h245Address)) {
		PTRACE(1, "H225\tCould not extract H245 address");
		delete controlChannel;
		controlChannel = NULL;
		return FALSE;
	}
	if (!controlChannel->Connect()) {
		PTRACE(1, "H225\tConnect of H245 failed: " << controlChannel->GetErrorText());
		delete controlChannel;
		controlChannel = NULL;
		return FALSE;
	}

	controlChannel->StartControlChannel(*this);
	return TRUE;
}

#ifdef H323_H450
void MyH323Connection::OnReceivedLocalCallHold(int linkedId)
{
	if (on_hold)
		on_hold(GetCallReference(), (const char *)GetCallToken(), 1);
}

void MyH323Connection::OnReceivedLocalCallRetrieve(int linkedId)
{
	if (on_hold)
		on_hold(GetCallReference(), (const char *)GetCallToken(), 0);
}
#endif

void MyH323Connection::MyHoldCall(BOOL isHold)
{
	if (((holdHandling & H323_HOLD_NOTIFY) != 0) || ((holdHandling & H323_HOLD_Q931ONLY) != 0)) {
		PBYTEArray x ((const BYTE *)(isHold ? "\xF9" : "\xFA"), 1);
		H323SignalPDU signal;
		signal.BuildNotify(*this);
		signal.GetQ931().SetIE((Q931::InformationElementCodes)39 /* Q931::NotifyIE */, x);
		if (h323debug)
			cout << "Sending " << (isHold ? "HOLD" : "RETRIEVE") << " notification: " << signal << endl;
		if ((holdHandling & H323_HOLD_Q931ONLY) != 0) {
			PBYTEArray rawData;
			signal.GetQ931().RemoveIE(Q931::UserUserIE);
			signal.GetQ931().Encode(rawData);
			signallingChannel->WritePDU(rawData);
		} else
			WriteSignalPDU(signal);
	}
#ifdef H323_H450
	if ((holdHandling & H323_HOLD_H450) != 0) {
		if (isHold)
			h4504handler->HoldCall(TRUE);
		else if (IsLocalHold())
			h4504handler->RetrieveCall();
	}
#endif
}


/* MyH323_ExternalRTPChannel */
MyH323_ExternalRTPChannel::MyH323_ExternalRTPChannel(MyH323Connection & connection,
							const H323Capability & capability,
							Directions direction,
							unsigned id)
	: H323_ExternalRTPChannel::H323_ExternalRTPChannel(connection, capability, direction, id)
{
	struct rtp_info *info;

	/* Determine the Local (A side) IP Address and port */
	info = on_external_rtp_create(connection.GetCallReference(), (const char *)connection.GetCallToken());
	if (!info) {
		cout << "\tERROR: on_external_rtp_create failure" << endl;
		return;
	} else {
		localIpAddr = info->addr;
		localPort = info->port;
		/* tell the H.323 stack */
		SetExternalAddress(H323TransportAddress(localIpAddr, localPort), H323TransportAddress(localIpAddr, localPort + 1));
		/* clean up allocated memory */
		free(info);
	}

	/* Get the payload code	*/
	OpalMediaFormat format(capability.GetFormatName(), FALSE);
	payloadCode = format.GetPayloadType();
}

MyH323_ExternalRTPChannel::~MyH323_ExternalRTPChannel()
{
	if (h323debug) {
		cout << "\tExternalRTPChannel Destroyed" << endl;
	}
}

BOOL MyH323_ExternalRTPChannel::Start(void)
{
	/* Call ancestor first */
	if (!H323_ExternalRTPChannel::Start()) {
		return FALSE;
	}

	if (h323debug) {
		cout << "\t\tExternal RTP Session Starting" << endl;
		cout << "\t\tRTP channel id " << sessionID << " parameters:" << endl;
	}

	/* Collect the remote information */
	H323_ExternalRTPChannel::GetRemoteAddress(remoteIpAddr, remotePort);

	if (h323debug) {
		cout << "\t\t-- remoteIpAddress: " << remoteIpAddr << endl;
		cout << "\t\t-- remotePort: " << remotePort << endl;
		cout << "\t\t-- ExternalIpAddress: " << localIpAddr << endl;
		cout << "\t\t-- ExternalPort: " << localPort << endl;
	}
	/* Notify Asterisk of remote RTP information */
	on_start_rtp_channel(connection.GetCallReference(), (const char *)remoteIpAddr.AsString(), remotePort,
		(const char *)connection.GetCallToken(), (int)payloadCode);
	return TRUE;
}

BOOL MyH323_ExternalRTPChannel::OnReceivedAckPDU(const H245_H2250LogicalChannelAckParameters & param)
{
	if (h323debug) {
		cout << "	MyH323_ExternalRTPChannel::OnReceivedAckPDU" << endl;
	}

	if (H323_ExternalRTPChannel::OnReceivedAckPDU(param)) {
		GetRemoteAddress(remoteIpAddr, remotePort);
		if (h323debug) {
			cout << "		-- remoteIpAddress: " << remoteIpAddr << endl;
			cout << "		-- remotePort: " << remotePort << endl;
		}
		on_start_rtp_channel(connection.GetCallReference(), (const char *)remoteIpAddr.AsString(),
				remotePort, (const char *)connection.GetCallToken(), (int)payloadCode);
		return TRUE;
	}
	return FALSE;
}

#ifdef H323_H450
MyH4504Handler::MyH4504Handler(MyH323Connection &_conn, H450xDispatcher &_disp)
	:H4504Handler(_conn, _disp)
{
	conn = &_conn;
}

void MyH4504Handler::OnReceivedLocalCallHold(int linkedId)
{
	if (conn) {
		conn->Lock();
		conn->OnReceivedLocalCallHold(linkedId);
		conn->Unlock();
	}
}

void MyH4504Handler::OnReceivedLocalCallRetrieve(int linkedId)
{
	if (conn) {
		conn->Lock();
		conn->OnReceivedLocalCallRetrieve(linkedId);
		conn->Unlock();
	}
}
#endif


/** IMPLEMENTATION OF C FUNCTIONS */

/**
 * The extern "C" directive takes care for
 * the ANSI-C representation of linkable symbols
 */

extern "C" {

int h323_end_point_exist(void)
{
	if (!endPoint) {
		return 0;
	}
	return 1;
}

void h323_end_point_create(void)
{
	channelsOpen = 0;
	logstream = new PAsteriskLog();
	localProcess = new MyProcess();
	localProcess->Main();
}

void h323_gk_urq(void)
{
	if (!h323_end_point_exist()) {
		cout << " ERROR: [h323_gk_urq] No Endpoint, this is bad" << endl;
		return;
	}
	endPoint->RemoveGatekeeper();
}

void h323_debug(int flag, unsigned level)
{
	if (flag) {
		PTrace:: SetLevel(level);
	} else {
		PTrace:: SetLevel(0);
	}
}

/** Installs the callback functions on behalf of the PBX application */
void h323_callback_register(setup_incoming_cb		ifunc,
							setup_outbound_cb		sfunc,
							on_rtp_cb				rtpfunc,
							start_rtp_cb			lfunc,
							clear_con_cb			clfunc,
							chan_ringing_cb			rfunc,
							con_established_cb		efunc,
							receive_digit_cb		dfunc,
							answer_call_cb			acfunc,
							progress_cb				pgfunc,
							rfc2833_cb				dtmffunc,
							hangup_cb				hangupfunc,
							setcapabilities_cb		capabilityfunc,
							setpeercapabilities_cb	peercapabilityfunc,
							onhold_cb				holdfunc)
{
	on_incoming_call = ifunc;
	on_outgoing_call = sfunc;
	on_external_rtp_create = rtpfunc;
	on_start_rtp_channel = lfunc;
	on_connection_cleared = clfunc;
	on_chan_ringing = rfunc;
	on_connection_established = efunc;
	on_receive_digit = dfunc;
	on_answer_call = acfunc;
	on_progress = pgfunc;
	on_set_rfc2833_payload = dtmffunc;
	on_hangup = hangupfunc;
	on_setcapabilities = capabilityfunc;
	on_setpeercapabilities = peercapabilityfunc;
	on_hold = holdfunc;
}

/**
 * Add capability to the capability table of the end point.
 */
int h323_set_capabilities(const char *token, int cap, int dtmf_mode, struct ast_codec_pref *prefs, int pref_codec)
{
	MyH323Connection *conn;

	if (!h323_end_point_exist()) {
		cout << " ERROR: [h323_set_capablities] No Endpoint, this is bad" << endl;
		return 1;
	}
	if (!token || !*token) {
		cout << " ERROR: [h323_set_capabilities] Invalid call token specified." << endl;
		return 1;
	}

	PString myToken(token);
	conn = (MyH323Connection *)endPoint->FindConnectionWithLock(myToken);
	if (!conn) {
		cout << " ERROR: [h323_set_capabilities] Unable to find connection " << token << endl;
		return 1;
	}
	conn->SetCapabilities((/*conn->bridging ? conn->redir_capabilities :*/ cap), dtmf_mode, prefs, pref_codec);
	conn->Unlock();

	return 0;
}

/** Start the H.323 listener */
int h323_start_listener(int listenPort, struct sockaddr_in bindaddr)
{

	if (!h323_end_point_exist()) {
		cout << "ERROR: [h323_start_listener] No Endpoint, this is bad!" << endl;
		return 1;
	}

	PIPSocket::Address interfaceAddress(bindaddr.sin_addr);
	if (!listenPort) {
		listenPort = 1720;
	}
	/** H.323 listener */
	H323ListenerTCP *tcpListener;
	tcpListener = new H323ListenerTCP(*endPoint, interfaceAddress, (WORD)listenPort);
	if (!endPoint->StartListener(tcpListener)) {
		cout << "ERROR: Could not open H.323 listener port on " << ((H323ListenerTCP *) tcpListener)->GetListenerPort() << endl;
		delete tcpListener;
		return 1;
	}
	cout << "  == H.323 listener started" << endl;
	return 0;
};

int h323_set_alias(struct oh323_alias *alias)
{
	char *p;
	char *num;
	PString h323id(alias->name);
	PString e164(alias->e164);
	char *prefix;

	if (!h323_end_point_exist()) {
		cout << "ERROR: [h323_set_alias] No Endpoint, this is bad!" << endl;
		return 1;
	}

	cout << "== Adding alias \"" << h323id << "\" to endpoint" << endl;
	endPoint->AddAliasName(h323id);
	endPoint->RemoveAliasName(localProcess->GetUserName());

	if (!e164.IsEmpty()) {
		cout << "== Adding E.164 \"" << e164 << "\" to endpoint" << endl;
		endPoint->AddAliasName(e164);
	}
	if (strlen(alias->prefix)) {
		p = prefix = strdup(alias->prefix);
		while((num = strsep(&p, ",")) != (char *)NULL) {
			cout << "== Adding Prefix \"" << num << "\" to endpoint" << endl;
			endPoint->SupportedPrefixes += PString(num);
			endPoint->SetGateway();
		}
		if (prefix)
			free(prefix);
	}
	return 0;
}

void h323_set_id(char *id)
{
	PString h323id(id);

	if (h323debug) {
		cout << "  == Using '" << h323id << "' as our H.323ID for this call" << endl;
	}
	/* EVIL HACK */
	endPoint->SetLocalUserName(h323id);
}

void h323_show_tokens(void)
{
	cout << "Current call tokens: " << setprecision(2) << endPoint->GetAllConnections() << endl;
}

/** Establish Gatekeeper communiations, if so configured,
  *	register aliases for the H.323 endpoint to respond to.
  */
int h323_set_gk(int gatekeeper_discover, char *gatekeeper, char *secret)
{
	PString gkName = PString(gatekeeper);
	PString pass = PString(secret);
	H323TransportUDP *rasChannel;

	if (!h323_end_point_exist()) {
		cout << "ERROR: [h323_set_gk] No Endpoint, this is bad!" << endl;
		return 1;
	}

	if (!gatekeeper) {
		cout << "Error: Gatekeeper cannot be NULL" << endl;
		return 1;
	}
	if (strlen(secret)) {
		endPoint->SetGatekeeperPassword(pass);
	}
	if (gatekeeper_discover) {
		/* discover the gk using multicast */
		if (endPoint->DiscoverGatekeeper(new MyH323TransportUDP(*endPoint))) {
			cout << "== Using " << (endPoint->GetGatekeeper())->GetName() << " as our Gatekeeper." << endl;
		} else {
			cout << "Warning: Could not find a gatekeeper." << endl;
			return 1;
		}
	} else {
		rasChannel = new MyH323TransportUDP(*endPoint);

		if (!rasChannel) {
			cout << "Error: No RAS Channel, this is bad" << endl;
			return 1;
		}
		if (endPoint->SetGatekeeper(gkName, rasChannel)) {
			cout << "== Using " << (endPoint->GetGatekeeper())->GetName() << " as our Gatekeeper." << endl;
		} else {
			cout << "Error registering with gatekeeper \"" << gkName << "\". " << endl;
			/* XXX Maybe we should fire a new thread to attempt to re-register later and not kill asterisk here? */
			return 1;
		}
	}
	return 0;
}

/** Send a DTMF tone over the H323Connection with the
  * specified token.
  */
void h323_send_tone(const char *call_token, char tone)
{
	if (!h323_end_point_exist()) {
		cout << "ERROR: [h323_send_tone] No Endpoint, this is bad!" << endl;
		return;
	}
	PString token = PString(call_token);
	endPoint->SendUserTone(token, tone);
}

/** Make a call to the remote endpoint.
  */
int h323_make_call(char *dest, call_details_t *cd, call_options_t *call_options)
{
	int res;
	PString	token;
	PString	host(dest);

	if (!h323_end_point_exist()) {
		return 1;
	}

	res = endPoint->MyMakeCall(host, token, &cd->call_reference, call_options);
	memcpy((char *)(cd->call_token), (const unsigned char *)token, token.GetLength());
	return res;
};

int h323_clear_call(const char *call_token, int cause)
{
	H225_ReleaseCompleteReason dummy;
	H323Connection::CallEndReason r = H323Connection::EndedByLocalUser;
	MyH323Connection *connection;
	const PString currentToken(call_token);

	if (!h323_end_point_exist()) {
		return 1;
	}

	if (cause) {
		r = H323TranslateToCallEndReason((Q931::CauseValues)(cause), dummy);
	}

	connection = (MyH323Connection *)endPoint->FindConnectionWithLock(currentToken);
	if (connection) {
		connection->SetCause(cause);
		connection->SetCallEndReason(r);
		connection->Unlock();
	}
	endPoint->ClearCall(currentToken, r);
	return 0;
};

/* Send Alerting PDU to H.323 caller */
int h323_send_alerting(const char *token)
{
	const PString currentToken(token);
	H323Connection * connection;

	if (h323debug) {
		cout << "\tSending alerting" << endl;
	}
	connection = endPoint->FindConnectionWithLock(currentToken);
	if (!connection) {
		cout << "No connection found for " << token << endl;
		return -1;
	}
	connection->AnsweringCall(H323Connection::AnswerCallPending);
	connection->Unlock();
	return 0;
}

/* Send Progress PDU to H.323 caller */
int h323_send_progress(const char *token)
{
	const PString currentToken(token);
	H323Connection * connection;

	connection = endPoint->FindConnectionWithLock(currentToken);
	if (!connection) {
		cout << "No connection found for " << token << endl;
		return -1;
	}
#if 1
	((MyH323Connection *)connection)->MySendProgress();
#else
	connection->AnsweringCall(H323Connection::AnswerCallDeferredWithMedia);
#endif
	connection->Unlock();
	return 0;
}

/** This function tells the h.323 stack to either
    answer or deny an incoming call */
int h323_answering_call(const char *token, int busy)
{
	const PString currentToken(token);
	H323Connection * connection;

	connection = endPoint->FindConnectionWithLock(currentToken);

	if (!connection) {
		cout << "No connection found for " << token << endl;
		return -1;
	}
	if (!busy) {
		if (h323debug) {
			cout << "\tAnswering call " << token << endl;
		}
		connection->AnsweringCall(H323Connection::AnswerCallNow);
	} else {
		if (h323debug) {
			cout << "\tdenying call " << token << endl;
		}
		connection->AnsweringCall(H323Connection::AnswerCallDenied);
	}
	connection->Unlock();
	return 0;
}

int h323_soft_hangup(const char *data)
{
	PString token(data);
	BOOL result;
	cout << "Soft hangup" << endl;
	result = endPoint->ClearCall(token);
	return result;
}

/* alas, this doesn't work :( */
void h323_native_bridge(const char *token, const char *them, char *capability)
{
	H323Channel *channel;
	MyH323Connection *connection = (MyH323Connection *)endPoint->FindConnectionWithLock(token);

	if (!connection) {
		cout << "ERROR: No connection found, this is bad" << endl;
		return;
	}

	cout << "Native Bridge:  them [" << them << "]" << endl;

	channel = connection->FindChannel(connection->sessionId, TRUE);
	connection->bridging = TRUE;
	connection->CloseLogicalChannelNumber(channel->GetNumber());

	connection->Unlock();
	return;

}

int h323_hold_call(const char *token, int is_hold)
{
	MyH323Connection *conn = (MyH323Connection *)endPoint->FindConnectionWithLock(token);
	if (!conn) {
		cout << "ERROR: No connection found, this is bad" << endl;
		return -1;
	}
	conn->MyHoldCall((BOOL)is_hold);
	conn->Unlock();
	return 0;
}

#undef cout
#undef endl
void h323_end_process(void)
{
	if (endPoint) {
		endPoint->ClearAllCalls();
		endPoint->RemoveListener(NULL);
		delete endPoint;
		endPoint = NULL;
	}
	if (localProcess) {
		delete localProcess;
		localProcess = NULL;
		close(_timerChangePipe[0]);
		close(_timerChangePipe[1]);
	}
	if (logstream) {
		PTrace::SetLevel(0);
		PTrace::SetStream(&cout);
		delete logstream;
		logstream = NULL;
	}
}

} /* extern "C" */